'Happen' in the Bible

She said to them, “Go to the hill country, so that the pursuers will not happen upon you, and hide yourselves there for three days until the pursuers return. Then afterward you may go on your way.”

I, and all the people who are with me, will approach to the city. It shall happen, when they come out against us, as at the first, that we will flee before them.

"Look here: today I'm going down the path that everyone on earth takes, and you know with all your hearts and souls that not a single word of all of the good things that the LORD your God spoke about you has failed to happen. Everything has been fulfilled about you not one of them has failed.

It shall happen that as all the good things have come on you of which Yahweh your God spoke to you, so Yahweh will bring on you all the evil things, until he has destroyed you from off this good land which Yahweh your God has given you,